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CVE-2019-12456

Published: 30 May 2019

** DISPUTED ** An issue was discovered in the MPT3COMMAND case in _ctl_ioctl_main in drivers/scsi/mpt3sas/mpt3sas_ctl.c in the Linux kernel through 5.1.5. It allows local users to cause a denial of service or possibly have unspecified other impact by changing the value of ioc_number between two kernel reads of that value, aka a "double fetch" vulnerability. NOTE: a third party reports that this is unexploitable because the doubly fetched value is not used.

Notes

AuthorNote
tyhicks
There seems to be no security impact as the ioc_number is never used
after the "double fetch"

Priority

Negligible

Cvss 3 Severity Score

7.8

Score breakdown

Status

Package Release Status
linux-aws
Launchpad, Ubuntu, Debian
upstream Pending

bionic Ignored
(double fetched value is not used)
cosmic Ignored
(end of life)
disco Ignored
(end of life)
trusty Ignored
(was needs-triage ESM criteria)
xenial Ignored
(double fetched value is not used)
linux
Launchpad, Ubuntu, Debian
bionic Ignored
(double fetched value is not used)
cosmic Ignored
(end of life)
disco Ignored
(end of life)
trusty Ignored
(was needs-triage ESM criteria)
upstream Pending

xenial Ignored
(double fetched value is not used)
Patches:
Introduced by

f92363d12359498f9a9960511de1a550f0ec41c2

Fixed by f9e3ebeea4521652318af903cddeaf033527e93e
linux-aws-hwe
Launchpad, Ubuntu, Debian
bionic Does not exist

cosmic Does not exist

disco Does not exist

trusty Does not exist

upstream Pending

xenial Ignored
(double fetched value is not used)
linux-azure
Launchpad, Ubuntu, Debian
bionic Ignored
(double fetched value is not used)
cosmic Ignored
(end of life)
disco Ignored
(end of life)
trusty Ignored
(was needs-triage ESM criteria)
upstream Pending

xenial Ignored
(double fetched value is not used)
linux-azure-edge
Launchpad, Ubuntu, Debian
bionic Ignored
(double fetched value is not used)
cosmic Does not exist

disco Does not exist

trusty Does not exist

upstream Pending

xenial Ignored
(end of standard support)
linux-euclid
Launchpad, Ubuntu, Debian
bionic Does not exist

cosmic Does not exist

disco Does not exist

trusty Does not exist

upstream Pending

xenial Ignored
(end of life, was needs-triage)
linux-flo
Launchpad, Ubuntu, Debian
bionic Does not exist

cosmic Does not exist

disco Does not exist

trusty Does not exist

upstream Pending

xenial Ignored
(abandoned)
linux-gcp
Launchpad, Ubuntu, Debian
bionic Ignored
(double fetched value is not used)
cosmic Ignored
(end of life)
disco Ignored
(end of life)
trusty Does not exist

upstream Pending

xenial Ignored
(double fetched value is not used)
linux-gcp-edge
Launchpad, Ubuntu, Debian
bionic Ignored
(double fetched value is not used)
cosmic Does not exist

disco Does not exist

trusty Does not exist

upstream Pending

xenial Does not exist

linux-gke
Launchpad, Ubuntu, Debian
bionic Ignored
(end of standard support)
cosmic Does not exist

disco Does not exist

trusty Does not exist

upstream Pending

xenial Ignored
(end of life)
linux-goldfish
Launchpad, Ubuntu, Debian
bionic Does not exist

cosmic Does not exist

disco Does not exist

trusty Does not exist

upstream Pending

xenial Ignored
(end of life)
linux-grouper
Launchpad, Ubuntu, Debian
bionic Does not exist

cosmic Does not exist

disco Does not exist

trusty Does not exist

upstream Pending

xenial Does not exist

linux-hwe
Launchpad, Ubuntu, Debian
bionic Ignored
(double fetched value is not used)
cosmic Does not exist

disco Does not exist

trusty Does not exist

upstream Pending

xenial Ignored
(double fetched value is not used)
linux-hwe-edge
Launchpad, Ubuntu, Debian
bionic Ignored
(double fetched value is not used)
cosmic Does not exist

disco Does not exist

trusty Does not exist

upstream Pending

xenial Ignored
(double fetched value is not used)
linux-kvm
Launchpad, Ubuntu, Debian
bionic Ignored
(double fetched value is not used)
cosmic Ignored
(end of life)
disco Ignored
(end of life)
trusty Does not exist

upstream Pending

xenial Ignored
(double fetched value is not used)
linux-lts-trusty
Launchpad, Ubuntu, Debian
bionic Does not exist

cosmic Does not exist

disco Does not exist

trusty Does not exist

upstream Pending

xenial Does not exist

linux-lts-utopic
Launchpad, Ubuntu, Debian
bionic Does not exist

cosmic Does not exist

disco Does not exist

trusty Does not exist

upstream Pending

xenial Does not exist

linux-lts-vivid
Launchpad, Ubuntu, Debian
bionic Does not exist

cosmic Does not exist

disco Does not exist

trusty Does not exist

upstream Pending

xenial Does not exist

linux-lts-wily
Launchpad, Ubuntu, Debian
bionic Does not exist

cosmic Does not exist

disco Does not exist

trusty Does not exist

upstream Pending

xenial Does not exist

linux-lts-xenial
Launchpad, Ubuntu, Debian
bionic Does not exist

cosmic Does not exist

disco Does not exist

trusty Ignored
(was needs-triage ESM criteria)
upstream Pending

xenial Does not exist

linux-maguro
Launchpad, Ubuntu, Debian
bionic Does not exist

cosmic Does not exist

disco Does not exist

trusty Does not exist

upstream Pending

xenial Does not exist

linux-mako
Launchpad, Ubuntu, Debian
bionic Does not exist

cosmic Does not exist

disco Does not exist

trusty Does not exist

upstream Pending

xenial Ignored
(abandoned)
linux-manta
Launchpad, Ubuntu, Debian
bionic Does not exist

cosmic Does not exist

disco Does not exist

trusty Does not exist

upstream Pending

xenial Does not exist

linux-oem
Launchpad, Ubuntu, Debian
bionic Ignored
(double fetched value is not used)
cosmic Ignored
(end of life)
disco Ignored
(end of life)
trusty Does not exist

upstream Pending

xenial Ignored
(end of life, was needs-triage)
linux-oracle
Launchpad, Ubuntu, Debian
bionic Ignored
(double fetched value is not used)
cosmic Ignored
(end of life)
disco Ignored
(end of life)
trusty Does not exist

upstream Pending

xenial Ignored
(double fetched value is not used)
linux-raspi2
Launchpad, Ubuntu, Debian
bionic Ignored
(end of standard support)
cosmic Ignored
(end of life)
disco Ignored
(end of life)
trusty Does not exist

upstream Pending

xenial Ignored
(double fetched value is not used)
linux-snapdragon
Launchpad, Ubuntu, Debian
bionic Ignored
(end of standard support)
cosmic Does not exist

disco Ignored
(end of life)
trusty Does not exist

upstream Pending

xenial Ignored
(double fetched value is not used)

Severity score breakdown

Parameter Value
Base score 7.8
Attack vector Local
Attack complexity Low
Privileges required Low
User interaction None
Scope Unchanged
Confidentiality High
Integrity impact High
Availability impact High
Vector CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H